December weather forecastGeelong, Australia
December
Weather in December
December in Geelong brings forth an idyllic weather setting fitting for the holiday season. The uptick in average peak temperatures serves as a nudge towards the imminent summer season. The mildly chilly nights that are distinctive to this month do little to offset the enjoyable weather conditions. A remarkable visibility of 10km (6.2mi) enhances the enjoyment of the city's picturesque landscape. With typical wind speeds steady at 11.7km/h (7.3mph), the climate remains balmy, accommodating activities that run long into the warm, starry nights.Temperature
Geelong's shift into December sets the average high-temperature at a warm 23.1°C (73.6°F), a figure that deviates only slightly from November's 21.1°C (70°F). December is noted for a mean low-temperature of 12.6°C (54.7°F).Humidity
In December, the average relative humidity in Geelong, Australia, is 67%.Rainfall
In Geelong, in December, it is raining for 11.2 days, with typically 34mm (1.34") of accumulated precipitation. In Geelong, during the entire year, the rain falls for 153 days and collects up to 377mm (14.84") of precipitation.Sea temperature
In December, the average sea temperature in Geelong is 16.8°C (62.2°F).Note: Most people find swimming in 16.8°C (62.2°F) to be not enjoyable. The control of one's breathing becomes more challenging as the water temperature drops below 21°C (69.8°F).
Daylight
With an average of 14h and 48min of daylight, December has the longest days of the year in Geelong.On the first day of December, sunrise is at 5:53 am and sunset at 8:30 pm. On the last day of the month, sunrise is at 6:02 am and sunset at 8:48 pm AEDT.
Sunshine
With an average of 9.7h of sunshine, December has the most sunshine of the year.UV index
The month with the highest UV index in Geelong is December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.Note: In December, the maximum UV index of 6 suggests this advice:
Persist with precautions and heed sun safety advice. Prevention of sunburn is compulsory. Stay in the shade and limit direct sun exposure between 10 a.m. and 4 p.m., when UV radiation is at its strongest. Remember, however, that not all shade structures provide full sun protection. On sunny days, it's ideal to wear sunglasses that filter out UVA and UVB rays.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Geelong, Australia
- Average high temperature in December: 23.1°C
The warmest month (with the highest average high temperature) is January (25.1°C).
The month with the lowest average high temperature is July (13.1°C).
- Average low temperature in December: 12.6°C
The month with the highest average low temperature is February (15.1°C).
The coldest month (with the lowest average low temperature) is August (7°C).
Average pressure in December
Geelong, Australia
- Average pressure in December: 1012.8mbar
The month with the highest atmospheric pressure is June (1021.1mbar).
The month with the lowest atmospheric pressure is January (1012.6mbar).
Average wind speed in December
Geelong, Australia
- Average wind speed in December: 11.7km/h
The windiest month (with the highest average wind speed) is August (14.9km/h).
The calmest month (with the lowest average wind speed) is April (11.2km/h).
Average humidity in December
Geelong, Australia
- Average humidity in December: 67%
The month with the highest relative humidity is June (80%).
The month with the lowest relative humidity is January (64%).
Average rainfall in December
Geelong, Australia
- Average rainfall in December: 34mm
The wettest month (with the highest rainfall) is February (40mm).
The driest month (with the least rainfall) is March (25mm).
Average rainfall days in December
Geelong, Australia
- Average rainfall days in December: 11.2 days
The month with the highest number of rainy days is July (14.6 days).
The month with the least rainy days is January (9.7 days).
Average sea temperature in December
Geelong, Australia
- Average sea temperature in December: 16.8°C
The best month for swimming (with the highest average sea temperature) is February (18.3°C).
The coldest months (with the lowest average sea temperature) are August and September (13.8°C).
Average daylight in December /
Average sunshine in December
Geelong, Australia
- Average daylight in December: 14h and 48min
The month with the longest days is December (Average daylight: 14h and 48min).
The month with the shortest days is June (Average daylight: 9h and 36min).
- Average sunshine in December: 9h and 42min
The month with the most sunshine is December (Average sunshine: 9h and 42min).
The month with the least sunshine is August (Average sunshine: 6h and 42min).
Average sunshine days in December
Geelong, Australia
- Average sunshine days in December: 16.5 days
The month with the most sunshine days is January (16.9 days).
The month with the least sunshine days is September (12.1 days).
Average UV index in December
Geelong, Australia
- Average UV index in December: 6
The month with the highest UV index is December (UV index 6).
The months with the lowest UV index are June, July and August (UV index 3).
Average cloud cover in December
Geelong, Australia
- Average cloud cover in December: 33
The months with the most cloud cover are May and August (Cloud cover 45).
The month with the least cloud cover is January (Cloud cover 31).
Average visibility in December
Geelong, Australia
- Average visibility in December: 10km
The months with the highest visibility are January, February, March, June and December (10km).
The months with the lowest visibility are April, May, July, August, September, October and November (9km).
